In Beethoven's op. 27/2 in the autograph, bar 20, in the left hand on musical beat 1, the lower tone seems to be d sharp ("dis").


In the printed versions (i.e., Wiener Urtext) there is an e sharp ("eis").

The latter seems to be intended, since it would be an octave as an harmonic interval. I cannot believe that Beethoven made a writing error here(?)

What is the explanation?

  • Side note: use IMSLP for the originals. Not that it makes a difference, but it's slightly more reliable.
    – 10 Rep
    May 17, 2021 at 16:10
  • @10Rep Reliable in what way exactly? The Beethoven Haus in Germany seems pretty reliable to me!
    – Richard
    May 18, 2021 at 11:09

1 Answer 1


Beethoven made an error.

20.lh.1 Lower note is DD# [low D#] in all sources, a note that is harmonically absurd and was not even available on Beethoven's piano. It illustrates well the danger of placing too much faith in a composer's autograph score.

Cooper, Barry. 2007. Beethoven: The 35 Piano Sonatas, Volume 2 — Commentaries. London: ABRSM Publishing. Page 21.

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